#box1{
            width:800px;
            height: 850px;
            position: relative;
            margin:  auto; 
        }
.img{
            width: 266px;
            height: 266px;
            float: left;      
            margin-top: 7px;
            cursor: pointer;/*鼠标改变形状*/     
     }
.colorLump{
            /*改变亮度*/ 
            -webkit-filter: brightness(60%); 
            -moz-filter: brightness(60%); 
            -ms-filter: brightness(60%); 
            -o-filter:brightness(60%); 
            filter: brightness(60%);
            
            
           
            

}